环境温度和湿度条件对混凝土抗疲劳性能影响的试验研究

Y. Koda
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引用次数: 0

摘要

已知混凝土在受水饱和时抗疲劳性能下降,低温时抗压强度增加。然而,对于环境温湿度条件对混凝土抗疲劳性能的影响,目前还没有系统的研究。在本研究中,对混凝土圆柱体进行了静载和疲劳试验,以确定其在压缩下的疲劳抗力。结果表明,在室温下,随着含水率的增加,静态抗压强度降低;相反,在低温下,它随着含水量的增加而增加。另一方面,无论温度如何,随着含水率的增加,疲劳抗力降低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental study of ambient temperature and moisture conditions on fatigue resistance of concrete
It is known that the fatigue resistance of concrete decreases when it becomes saturated with water, and that its compressive strength increases at low temperature. However, there have been few systematic investigations of the influence of the environmental temperature and moisture conditions on the fatigue resistance of concrete. In the present study, static loading and fatigue tests were carried out on concrete cylinders to determine their fatigue resistance under compression. The results indicated that at room temperature, the static compressive strength decreased with increasing moisture content. In contrast, at low temperature, it increased with increasing moisture content. On the other hand, regardless of the temperature, the fatigue resistance decreased as the moisture content increased.
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